A Simple Approach for Synthesizing of Fluorescent Carbon Quantum Dots from Tofu Wastewater

	A Simple Approach for Synthesizing of Fluorescent Carbon Quantum Dots from Tofu Wastewater
	Zhang, Jin 2; Wang, Hong 2; Xiao, Yiming 2; Tang, Ju 2; Liang, Changneng 2; Li, Fengyan 2; Dong, Haiming 1; Xu, Wen 2
刊名	NANOSCALE RESEARCH LETTERS
	2017
卷号	12
ISSN号	1556-276X
英文摘要	We present an investigation on carbon quantum dots (CQDs) synthesized from wastewater induced during the production of tofu. We find that tofu wastewater is a good source of raw material in making fluorescent CQDs. The corresponding CQDs can be fabricated simply via hydrothermal reaction to carbonize the organic matter in the yellow serofluid of tofu wastewater. Two sorts of CQDs can be obtained within the deionized water and NaOH solution, respectively, where the CQDs in water (NaOH solution) can emit blue (green) light under the UV irradiation. It is found from X-ray photoelectron spectroscopy (XPS) that the basic difference between these two sorts of CQDs is the contents of C-O and C=O bonds on the surface of the CQDs. This difference can cause different features of the photoluminescence (PL) spectra of the CQDs. On the basis of the obtained results from the XPS and PL measurements, we propose a mechanism in understanding and explaining the photon-induced light emission from CQDs. This study is relevant to the fabrication and application of fluorescent CQDs as, e.g., light display materials.
资助项目	[National Natural Science Foundation of China] ; [Department of Science and Technology of Yunnan Province] ; [Yunnan University] ; [Hefei Center for Physical Science and Technology]
语种	英语
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/124176]
专题	中国科学院合肥物质科学研究院
作者单位	1.Hefei Institutes of Physical Science, Chinese Academy of Sciences 2.Yunnan University
推荐引用方式 GB/T 7714	Zhang, Jin,Wang, Hong,Xiao, Yiming,et al. A Simple Approach for Synthesizing of Fluorescent Carbon Quantum Dots from Tofu Wastewater[J]. NANOSCALE RESEARCH LETTERS,2017,12.
APA	Zhang, Jin.,Wang, Hong.,Xiao, Yiming.,Tang, Ju.,Liang, Changneng.,...&Xu, Wen.(2017).A Simple Approach for Synthesizing of Fluorescent Carbon Quantum Dots from Tofu Wastewater.NANOSCALE RESEARCH LETTERS,12.
MLA	Zhang, Jin,et al."A Simple Approach for Synthesizing of Fluorescent Carbon Quantum Dots from Tofu Wastewater".NANOSCALE RESEARCH LETTERS 12(2017).